Patent US2517893A successfully refreshed from Google Patents.
US2517893A
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Stabilized chlorohydrocarbon cleaning composition
Assignee: EIDP Inc
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Filing: 1946-05-13
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Granted: 1950-08-08
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Expires: 1966-05-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Larchar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:40
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02854; C23G5/02893; C07; C07C; C07C17/00; C07C17/38; C07C17/42; C23G5/02883; C23G5/02887
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A CLEANING COMPOSITION STABILIZED AGAINST DECOMPOSITION CONSISTING ESSENTIALLY OF A VOLATILE ALIPHATIC CHLOROHYDROCARBON SOLVENT BOILING BELOW ABOUT 150*C. AND FROM .02% TO 1%, BASED ON THE WEIGHT OF SAID VOLATILE ALIPHATIC CHLOROHYDROCARBON SOLVENT, OF A FIVE-MEMBERED HETEROCYCLIC COMPOUND BOILING BELOW 175*C., HAVING AS RING ATOMS, THREE CARBON ATOMS, ONE NITROGEN ATOM AND ONE ATOM SELECTED FROM THE CLASS CONSISTING OF OXYGEN AND SULFUR ATOMS AND WHEREIN ANY RING ATOM SUBSTITUENTS OTHER THAN HYDROGEN ARE ALKYL GROUPS CONTAINING LESS THAN FOUR CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |